Hair-curling device



April 25, 1933- R. CHESTNUT HAIR CURLING DEVICE Filed June 27, 1932Patented Apr. 25, 1933 "UNITED STATES PATENT ROBERT CHESTNUT, orGRANTWOOD, NEW JERSEY, vnssronon. T0 AnUmuMscn-nw MACHINE rnonuc'rsCOMPANY, or EDGEWATER,

OF NEW JERSEY Application filed June 2?,

This invention relates to hair-curling devices and more particularly todevices to be employed in connection with permanenthair-waving'mechanisms.

In the process of curling or waving hair, aplurality of strands of hairare bound together adjacent the scalp. and then wound spirally on apencil-like instrument and in this manner the hair is prepared for thenecessary subsequent treatment.

Various devices, have been devised for spirally winding hair as abovedescribed and for the most part these devices have usually included atubular or barrel member on which the hair was spirally'wound ortwisted, a rotatable bifurcated tip member adapted to engage and twistthe hair, and means for rotating the bifurcated tip member,

In these operations the tress of'hair is twisted in one direction onlyand tightened to any desired extent; To secure this result variousmeans, such as coil or flat springs etc., are usually suitably disposedWithin the haircurling device, permitting 5 rotation of the bifurcatedtip member in one direction and preventing its rotation in the oppositedirection. The devices employed for this purpose are usually complicatedin construction and very often when the operator, attempts to rotatethem in the wrong direction, the coil springs are deformed and thedevice finally becomes ineffective.

It is an object of this invention to provide a hair-curling device ofsimple construction which includes manually operated means for rotatingthe bifurcated hair-engaging member in one direction only and means forpreventing rotation in the opposite direction, said latter means beingan integral portion of the tubular portion or barrel of the device uponwhich the hair is spirally wound.

Other objects, as well as novel features and advantages of thisinvention, will be more apparent when the following description isconsidered in conjunction with the accompanying drawing in which:

' Fig. 1 represents a side elevation of the improved hair curler;

Fig. 2 represents a side elevation in par- NEW .J'ERSEY,;A CORPORATIONHAIR-CURLING- DEVICE 1932. Serial No. 619,547.

tial section, toan enlarged scale, of the im.- proved hair curlerconstructed in accord; ance w1th this invention; i

Fig. 3 represents an end viewasviewed from the right of Fig.2; I j H YFig. 4.- represents a fragmentary view ofa modified form of the enlargedend of the i tubular body member and its: associated parts; i

Fig. 5 represents a sectional elevation tak-Z en on the line VV ofFig.4, I' 1 Fig. 6 represents afragmentary View of another modified form ofthe enlarged end v of the tubular body member and its associs I atedparts; V p j F ig. 7 represents a sectional elev'ationtakf on on theline VIIVII of Fig. 6.

together by means of a central shank or bolt member 13.

The shank 13is threaded at both ends and engages suitable internallythreaded sockets 14: and 15. in the tipmember 11 and the cap 12respectively; The, bifurcated tip member 11 is provided With a sphericalseat 16 which cooperates withthe rounded end of the barrel member 10 to.align the parts and forma tight joint therebetweenQ The cap 12 isprovided with a counterbore which snugly fits over .andiencases a portion of the large end of the barrel 10. Aset screw 18, the threads ofwhich are cut inopposite direction to those locatedon the ends of theshank 13, is screwed,- in a suitable'in ternally threadedsocketin theend of the cap member 12, into contact withQthe end of the shank 13.This constructionpermitssimul taneous rotation of the bifurcated tip member lland the cap 12 and secures the various elements .of the improvedhaincurling de vice in properly adjusted: assembly; 4

' A spiral groove 19 is provided on the bi tion of the tubular bodymember encased within the counterbore or cavity 17 of cap 12. The depthof this groove increases, in substantially a quarter revolution, fromzero to a dimension greater than the wall thickness of the tubular bodymember 10 and continues at this increased depth to the end of the bodymember. This groove constitutes, integrally with the I tubular member10, a thread-like formation, the adjacent threads 51* convolutions '20of which'are separated and spaced from each other. In the preferredforms of my invention the groove 19is V- shaped andcan be quite readilyformed by a suitable threading tool, the thread thus produced having aroot. diameter less than the interior diameter of the tubular bodymember10. i

The convolutions 2Q produced by the spiral groove 19 are preferably flatas at 21 and are of an outside diameter permitting a snug slidin thecounterbore 17. The direction of the spiral groove 19. is counterclockwise with respect to the direction of the threads on the ends. ofthe shank 13, for a purpose to be hereinafter described.

In assembling the improved hair-curling device, oneend of the shank 13is threaded into the threaded socket 14 in the tip member 11. Thereafterthe tubular body memher 10 is placed over the shank 13, the rounded endof the longitudinally tapered tubular member 10 seating within thespherical seat 16 01517116 tip" member. The cap member-12 i s thenthreaded onto the opposite end of the shank 13 through the engagement ofthe threads on the shank with the internally threaded portion 15. of thecap 12, and the shoulder 26, of the cavity 17 is brought into contactwith the free end of the convolutions 20. The set screw 18 is thenscrewed into the threaded end of the cap. 12 into contactingrelationship with the end of the shank 18, thus s q nring h elem t of heair-cu ing'device in'their desired adjusted position.

It. will be readily observed that rotation of the cap 12 and itsconnected tip member ll relative to the body member 10 will be possible.in. a clockwise direction, whereas any attempt ,to rotate said membersin a counter clockwise direction will meet with restraint inview of the.expanding action of the. convolutions 20. into frictional engage; mentwith the interior surface of the cavity 17 and the shoulder 26.

In. the modified form, of hair-curling device. shown in Figs. 4 and 5the convolutions 22, formed integral with the tubular body member 10,are provided with. longitudinal grooves 23 which present ridges incontact 1 the. interior surface of the cavity 17 of thecapmember12.Inthis forinv an addition.- alfresistance. to rotation in a counterclockwise direction, is provided asthe. ridges will tend to. bite intothe surface of the counterbore 17. The grooves 23 also provide recessesfor a lubricant, if such is considered necessary, to assist rotation ina clockwise direction. Although parallel longitudinal grooves 23 arepreferred, any suitable roughened surface may be used, such as thatproduced by a knurling operation.

In both of the above-described examples of my invention, hair-curlingdevices have been shown which are adapted to be operated in a right-handor clockwise direction. It is quite manifest that these devices may beconstructed for left-hand or counter clockwise operation by reversingthe direction of the threads on the rod 13 and within the bifurcated tip11 and cap 12, and at the same time reversing the direction of theconvolutions and 22. Y Y

Referring to Figs. 6. and 7, another modification of the improvedhair-curling device is illustrated. In this form of the invention, adevice is shown which is adapted to be. operated in a left-hand orcounter clockwise direction. The mechanism incorporated in thisembodiment of the invention for restraining rotation of the. cap 12relative. to. the tubular body member 10 in one direction, comprises oneor more grooves 26., the depth of which is greater than the wallthickness and the length of which is less than the circumference of thetubular body member. This construction provides one or more arcuatemembers 27 and a slot 28 cut through these mem bers separates them fromthe tubular body member at one of their ends whereas their oppositeends, are integrally attached to the body member.

In this form of the invention it will be observed that rotation of thecap 12 relative to the body member 10 will be permittedin a counterclockwise or left-hand direction, whereas any attempt to rotate the capin a clockwise direction will meet with restraint in View of theexpandingaction of the arcuate member or members 27 into frictionalengagement with the interior surface of the cavity 17. This embodimentof the invention may also be converted for clockwise or righthandoperation by merely changing the position of the slot 28 to the oppositeside. of.

the vertical center line of the mechanism, as viewed in Fig. 7, andreversing the direction of the threaded portions of the device.

In the operation of my improved hair curler, a tress of hair, havingbeen carefully prepared and bound with a piece of string, is secured tothe tip member 11 by inserting the string within the. slot 24 and tyingthe same in the annular groove 25. In the de-. vices shown, in Figs. 2and 4 the nut 12 is then, rotated in a clockwise direction, which actionrotates thebifurcated tipv member 11 to spirally wind the tress; of uponthe barrel member 10. In, the device shown in Fig. 6 the cap 12 is.rotated. in a counter clockwise direction with the same result. Asbefore described, the expanding action of the convolutions 20 and 22 ofthe devices shown in Figs. 2 and 4, and the expanding action of thearcuate member or members 27 in the device shown in Fig. 6, preventsrotation of the cap 12 and tip 11 in the wrong direction.

Having thus described and explained my invention and its mode ofoperation, it is to be understood that the apparatus described isselected merely for purposes of illustration and that numerousvariations in the form and arrangement of parts shown and describedherein may be made without departing from the nature and scope of theinvention except as defined in the appended claims.

.VVhat I claim is: j

1. A hair-curling device comprising a tubular body member, a rotatabletip member mounted at one end thereof, a rotatable cap member mounted atthe other end thereof, means connecting said cap and said tip wherebyrotation is imparted to said tip by said cap, and means integral withsaid tubular body for permitting rotation of said cap and tip in onedirection only.

2. A hair-curling device comprising a tubular body member, a rotatabletip member mounted at one end thereof, a rotatable cap member mounted atthe other end thereof, means connecting said cap and tip wherebyrotation is imparted to said tip by said cap, and a thread-likeformation integral with said tubular body member and adapted to providefrictional resistance against the rotation of said cap member in onedirection.

53. A hair-curling device comprising a tubular body member, a shankextending through said body member, a tip member connected to one end ofsaid shank, a cap member connected to the opposite end of said shank,said cap having a cavity which encases a portion of said tubular bodymember, said encased portion of the tubular body member having athread-like formation integral therewith and adapted to engage the capmember to restrict its rotation in one direction. V

4. A hair-curling device comprising a tubular body member, a shankextending through said body member, a tip member connected to one end ofsaid shank, a cap member connected to the opposite end of said shank,adjustable means associated with said cap and shank for positioning thecap member in various positions on said shank, and positive meansincorporated in said cap member for locking the same in any one of itsvarious positions on said shank.

5. A hair-curling device comprising a tubular body member, a shankextending through said body member, a tip member connected to one end ofsaid shank, a cap member connected to the other end of said shank, saidcap member having a cavity into which a portion of said tubular bodymember extends, and means formed integral with said tubular, body memberand adapted to provide frictional resistance with theinner surface ofsaid cavity against rotatio'nvof said cap member in one direction, a I

6. Ahair-curling device comprising a tubular body member, a shank.extending through said body member, a tip member connected to one end ofsaid shank, a cap member connected to the otherend of said shank, saidcap member having a cavity into which a portion of said tubular bodymember extends, means formed integral with said tubular body member andadapted to frictionally engage the inner surface of said cavity againstrotation of said cap member in one direction, and means associated withsaid cap and shank for retaining the tip and cap membersin fixedrelationship ,to each other. i

member having a spiral groove cut in one end thereof, said grooveincreasing, in substantially a quarter revolution, to .a depth greaterthan the wall thickness of said tubular body member and proceeding atthis increased depth to the end of said tubular body member toconstitute a thread-like formation integral with said tubular bodymember the adjacent convolutions of which are separated, a rotatable tipmember mounted at one end of said tubular body member, a rotatable capmember mounted at the opposite end of said tubular body member, said tipandcap members being tied together, for simultaneous rotation by meansof a shank member extending through said tubular body member, said capmember being provided with a cavity which encases the thread-likeformation to provide frictional resistance between said thread-likeformation and the interior surface of said cavity thereby permittingrotation of said cap member in one direction only.

8. In a hair-curling device, a tubular body member having a thread-likeformation integral with one end thereof, said thread-like formationbeing formed in a manner to provide separated adjacent convolutions, theoutside peripheries of which are roughened to produce ridges thereon, atip member rotatably mounted at one end of said tubular body member, acap member rotatably mounted at the opposite end of said tubular bodymember, said cap member being provided with a cavity which encases thethread-like formation, said ridges on the thread-like formation beingadapted to cooperate with the interior surface of said cavity torestrain rotation of the cap member in one direction.

9. In a hair-curling device, a tubular body member having an arcuategroove cut through the wall of said tubular body member adjacent one endthereof, a slot extend- 7. In a hair-curling device, a tubular body 4 mmas ing from the end of said tube to said arcuate V groove whereby anarcuate member isv pro Vided integrally attached at one end to saidtubular body member and separated therefrom at its opposite end, a tipmember rotatably mounted at one end of said tubular body member, a capmember rotatably mounted at the opposite end of said: tubular bodymember, said cap member being provided I 111 with a cavity which encasesthe arcuate' memher, said arcuate member providing frictional resistanceon the interior surface of said cavity against rotation of said capmember in one direction.

15 10. A hair-curling device comprising a tubular body member, a shankhaving screw threads formed on its extremities extending through saidbody member, a tip member and a cap member, said tip and cap members 2%being provided with threaded sockets for attachment to the extremitiesof said shank member in cooperative relationship with said body member,a cavity in said cap member and means formed integral with said body 25memberadapted to provide frictional resistance with the inner surface ofsaid cavity against rotation of said cap member in one direction, and aset screw disposed in said cap member, said set screw being adapted to39 be brought into engagement with the end of 1 said shank memberwhereby the cap and tip members may be secured to the shank inadjustable relationship with respect to said body member.

'35 In testimony whereof I hereto affix my signature.

ROBE-RT CHESTNUT.

